Home / 13,623.78-20,425.31-7,045.77

Finding the Fourth Proportional to 13,623.78, 20,425.31 and 7,045.77

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Solution

The fourth proportional to 13,623.78, 20,425.31 and 7,045.77 is: 10,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.78 : 20,425.31 = 7,045.77 : x
  2. Step 2: Convert to fraction form
    13,623.78/20,425.31 = 7,045.77/x
  3. Step 3: Cross multiply
    13,623.78x = 20,425.31 × 7,045.77
  4. Step 4: Simplify right side
    13,623.78x = 143,912,036.44
  5. Step 5: Solve for x
    x = 143,912,036.44/13,623.78
  6. Step 6: Final answer
    x = 10,563.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.